Stud Cam Follower KR 90 PP, 30mm ID, 90mm OD / 513957

SKF Stud Type Track Rollers. Cam followers of the KR design are fitted with needle rollers and have a thick outer ring making them suitable for shock loads. Concentric cam follower The outer ring is guided via the integral flange at the head of the stud and the pressed on side washer SKF Cam followers on the PPA design have axial slide rings of polyamide 66 These slide rings reduce the friction and give relatively cool operation that is advantageous for the grease service life In the radial direction the slide ring forms a narrow gap to the outer ring that protects against course contaminations Operating temperature range is -30 to +100°C The PPA design has an improved profile of the runner surface which gives a better stress distribution, also under misaligned conditions The PPA design has a crowned running surface Supplied with grease nipples Lubrication can be done at the Head or thread end, except KR 16 ; 19 which can only be lubricated at the head